feat: v0.7.1, compiles without smart card(encrypt only)

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "tiny-encrypt"
-version = "0.7.0"
+version = "0.7.1"
 edition = "2021"
 license = "MIT"
 description = "A simple and tiny file encrypt tool"
@@ -8,6 +8,10 @@ repository = "https://git.hatter.ink/hatter/tiny-encrypt-rs"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[features]
+default = ["smartcard"]
+smartcard = ["openpgp-card", "openpgp-card-pcsc", "yubikey"]
+
 [dependencies]
 aes-gcm-stream = "0.2"
 base64 = "0.21"
@@ -18,8 +22,8 @@ flate2 = "1.0"
 fs-set-times = "0.20"
 hex = "0.4"
 indicatif = "0.17"
-openpgp-card = "0.3"
-openpgp-card-pcsc = "0.3"
+openpgp-card = { version = "0.3", optional = true }
+openpgp-card-pcsc = { version = "0.3", optional = true }
 p256 = { version = "0.13", features = ["pem", "ecdh", "pkcs8"] }
 p384 = { version = "0.13", features = ["pem", "ecdh", "pkcs8"] }
 rand = "0.8"
@@ -35,7 +39,7 @@ simpledateformat = "0.1"
 tabled = "0.14"
 x25519-dalek = "2.0"
 x509-parser = "0.15"
-yubikey = { version = "0.8", features = ["untested"] }
+yubikey = { version = "0.8", features = ["untested"], optional = true }
 zeroize = "1.6"
 
 [patch.crates-io]